Refractive accuracy with light-adjustable intraocular lenses

摘要

Cataract surgery has become a successful procedure to restore normal vision. Although phacoemulsification and foldable intraocular lens (IOL) implantation has largely improved this surgery, the calculation of the IOL power to obtain emmetropia (refraction below + 0.50 diopter [D]) continues to be a problem. The current predictions using regression formulas are sometimes not accurate as a result of errors in preoper-ative biometry and keratometry measurements, surgically induced corneal astigmatism, or variations in axial positions of the IOL. Most clinical studies report errors in IOL power calculation of approximately 0.50 D on average; however, the standard deviation (SD) is 0.50 D or higher.